The Metropolitan Museum's gallery note - "On November 27, 1776, Lady Derby first sat for this portrait. She returned to Romney's Cavendish Square studio ten times in the winters of 1777 and 1778. She was twenty-three with a son and had been married for two and a half years. The romantic background and her white dress are typical of Romney's portraits of women."
Upgrade image posted on 31 August 2012 from Maulleigh's photostream on flickr.